Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
willibrord-merkstein.de
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-04-04 20:59:31 UTC · ↺ Refresh
MX Hostnames
- mail.willibrord-merkstein.de
MX Priorities
- mail.willibrord-merkstein.de: 10
A / AAAA Records
- 95.143.172.21 ↩ francium.selfhost.de
Mail Server IPs
- 78.35.13.49 ↩ mail.willibrord-merkstein.de
SOA Record
Raw SOA
sec.mordac.de hostmaster.willibrord-merkstein.de 1775336395 16384 2048 1048576 2560
Primary NS (mname)
sec.mordac.de
Admin Email (rname)
hostmaster@willibrord-merkstein.de
Serial
1775336395
Refresh
16384s
Retry
2048s
Expire
1048576s
Minimum TTL
2560s
Nameservers (NS)
sec.mordac.de
pri.mordac.de
SPF Record
✓ Strict (-all)
v=spf1 ip4:78.35.13.49 mx -all
📊 DNS lookups: 1/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
~ Quarantine
v=DMARC1;p=quarantine;pct=100;rua=mailto:[email protected]
~ Quarantine — good protection (failing mail goes to spam)
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]
DKIM Selectors
✓ 1 found
dkim._domainkey
✓ Public key: 392 chars (valid)
✓ DKIM properly configured for selector: dkim
Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses
All TXT Records
1 record- SPFv=spf1 ip4:78.35.13.49 mx -all
Free · No signup required
Add email validation to your forms
Block disposable emails, validate MX records, detect role accounts — unlimited, forever free.
<script src="https://check.verifyswift.com/"></script>
One line of code · Works on any site
See demo & docs
Deep verification
Full email verification for willibrord-merkstein.de
SMTP handshake, catch-all detection, custom validation rules, actual deliverability tests, and more.
No credit card required
Get 1,000 Free Credits